from django.core.cache import cache
from django.shortcuts import render

# Create your views here.
from django.http import JsonResponse
from django.views import View
from apps.areas.models import Area
import logging

logger = logging.getLogger('django')

class AreasView(View):
    """省市区数据"""

    def get(self, request):
        """提供省市区数据"""
        province_list = cache.get('province')
        # 提供省份数据
        if province_list is None:
            try:
                # 查询省份数据
                province_model_list = Area.objects.filter(parent__isnull=True)

                # 序列化省级数据
                province_list = []
                for province_model in province_model_list:
                    province_list.append({'id': province_model.id, 'name': province_model.name})
            except Exception as e:
                logger.error(e)
                return JsonResponse({'code': 400, 'errmsg': '省份数据错误'})
        cache.set('province', province_list, 24 * 3600)
        # 响应省份数据
        return JsonResponse({'code': 0, 'errmsg': 'OK', 'province_list': province_list})



class SubAreasView(View):
    """省市区数据"""

    def get(self, request,id):
        """提供省市区数据"""
        data_list = cache.get('city:%s' % id)

        if data_list is None:
            # 提供市或区数据
            try:
                parent_model = Area.objects.get(id=id)  # 查询市或区的父级
                sub_model_list = parent_model.subs.all()

                # 序列化市或区数据
                sub_list = []
                for sub_model in sub_model_list:
                    sub_list.append({'id': sub_model.id, 'name': sub_model.name})

                sub_data = {
                    'id': parent_model.id,  # 父级pk
                    'name': parent_model.name,  # 父级name
                    'subs': sub_list  # 父级的子集
                }
            except Exception as e:
                logger.error(e)
                return JsonResponse({'code': 400, 'errmsg': '城市或区数据错误'})
                # 缓存数据
            cache.set('city:%s' % id, data_list, 24 * 3600)

        # 响应市或区数据
        return JsonResponse({'code': 0, 'errmsg': 'OK','sub_data':{'subs':data_list}})


